20 m 7 m
9 m
10 m
find the area of the triangle. (A = {bn)
A. 140 m2
B. 90 m2
ОО
C. 46 m2
D. 35 m2
E 39 m2

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.